Diamond grinding is the first day of nearly every job: the slab is ground under vacuum extraction until it is clean, open concrete, because overlays bond to the profile of the concrete, not to laitance, sealer, glue or paint. The same machines remove coatings, level high spots and take lipped joints and trip hazards back to flush.
Concrete grinding in South East Queensland
Diamond grinding: coating removal, trip hazards taken off, and the profile every overlay needs to bond to.
Grinding is the first day of nearly every job we do. An overlay bonds to the profile of the concrete underneath, not to the laitance, sealer, glue or paint sitting on top of it. So the slab gets ground back until it is clean, open and sound.
The same machines fix problems on their own account: lifted joints and trip hazards ground flush, old tile adhesive and epoxy taken off, high spots levelled where a door or gate no longer clears.
Everything runs on vacuum extraction. Grinding a driveway without it coats the house, the cars and the neighbours in fine grey dust that then washes into the pool.
- Surface preparation and profiling ahead of overlays and coatings
- Removal of paint, sealer, epoxy, carpet glue and tile adhesive
- Trip hazards and lipped joints ground flush
- High spot levelling for door, gate and drainage clearance
- Dust-extracted grinding, inside and out
Photographed on our own jobs.
Every photo on this site is a slab we prepared and finished ourselves. No stock library, no supplier brochures.
Four days, in the same order, every job.
Preparation is most of the work and all of the warranty. The decorative part is the last day.
01 — Grind and test
Diamond grind back to sound concrete, then moisture and bond test. If the slab fails, you get told before you pay for an overlay that will lift.
02 — Repair and prime
Cracks cut, filled and bridged. Falls corrected so water leaves the slab instead of sitting on it. Primer coat the same day.
03 — Lay the finish
Overlay, stencil, aggregate or flake, laid to the build-up quoted. One crew, no subcontracted finishers.
04 — Seal and cure
Two coats of UV-stable sealer. Foot traffic at 24 hours, vehicles at 72 on most finishes.
The questions we get asked
Is grinding the same as polishing?
No. Grinding opens and levels the surface. Polishing continues through finer diamond grits to a sheen — see polished concrete for that finish.
Does grinding weaken the slab?
Removing a millimetre or two of surface laitance does not affect a sound slab structurally. It removes the weakest layer, which is why coatings bond better afterwards.
Which suburbs do you cover?
Brisbane, Ipswich, Logan, Redlands, the western corridor and both coasts. Anything further out we quote case by case.
Are you licensed?
QBCC licence 1109935, and fully insured. The licence number is on every quote and can be checked on the QBCC register.
Guides on this work
Other services
Send a photo of the slab.
We will tell you whether it can be resurfaced, what finish suits it, and what it costs — before anyone turns up with a grinder.